Question: However, this type of ciphering produces patterns since the same plaintext strings produce the same cipher text. Polyalphabetic Cipher, on the other hand mitigates this

However, this type of ciphering produces patterns since the same plaintext strings produce the same
cipher text. Polyalphabetic Cipher, on the other hand mitigates this problem as plaintext characters
are not always replaced with the same cipher text character. The replacement of each character depends
on a key as well as on the position of the character in the text; for example, by using a formula such
as:
However, this type of ciphering produces patterns since the same plaintext

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